Box making machine



Nov. 17, 1931. L. H. GEBHART BOX MAKING MACHINE Filed March 10, 1930 16 Sheets-Sheet l INVEN'TOR Lou/5 yaw/M 7 AI'T ORNEY Nov. 17, 1931.

FIG. 2

L. H. GEBHART BOX MAKING MACHINE Filed March l0,

INVENTOR 1. 01/15 H- GEBHART- ATTORNEY Nov. 17, 1931. GEBHART 1,832,481

BOX MAKING MACHINE Filed March 10. 1950 ,16 Sheets-Sheet 3 ATTORNEY$ Nov. 17, 1931. L. H. GEBHART BOX MAKING MACHINE Filed March 10, 1930 16 Sheets-Sheet 4 Nov. 17, 1931. H. GEBHART BOX MAKING MACHINE Filed March .10, 1930 16 Sheets-Sheet 5 INVEN'T'OR ATTORNEYQ v 1931- H. GEBHART BOX MAKING MACHINE Filed March 10. 1930 1.6 Sheets-Sheet 6 IN VEN TOR L 00/: H. gfBl-IA RT q A TTORNE Y Nov. 17, 1931. 1.. H. GEBHART BOX MAKING MACHINE Filed March .10, 1930 16 Sheets-Sheet 8 IN VENT 0R LOU/j H1 W A TTORNEY NOV. 17, 1931. GEBHART 1,832,481

BOX MAKING MACHINE Filed March 10, 1930 16 Sheets-Sheet 9 FIG. IO

1 1 & INVENTOR 1. OUIS H-fal/" T4 ATTORNEY Nov. 17, 1931. L H. GEBHART BOX MAKING MACHINE Filed March 10, 1950 16 Sheets-Sheet 13 53 FIG. 17

FIGJS H N a E E v a, m a w w L ATTORNEY? Nov. 17, 1931. L. H. GEBHART BOX MAKING MACHINE Filed March 10, 1930 16 Sheets-Sheet 14 mvzu-rok 4 011/: H. EBH/QR 'rv ATTORNEY? mTwE 15 Sheets-Sheet l5 INVENTOR ATTORNEY L. H. GEBHART BOX MAKING MACHINE Filed March 10 1930 1 IHIIHHH Nov. 17, 1931.

1931- H. GEBHART BOX MAKING MACHINE Filed March 10, 1930 16 Sheets-Sheet I6 INVENT OR 1 00A fEBl/AZ 7'.

A TTORNEY z MM mm BY. W

Patented Nov. 17, 1931 UNITED STATES PATENT 1 OFFICE Lotus 11. onnm'r, or DAYTON, 0310, nssrenoa TO grnn'onnmr FOLDING Box 001:.

'PANY, or DAYTON, 0310, Av coaroaarron or 01110 120i mme mcnmn Application filed larch 10, 1930. Serial No. 434,583. i

This inventionrelates to a machine and method of manufacturing collapsible folding boxes. i v It is the object of my invention to manufacture at very high speed a complete box ready for folding and use from a continuous strip of material so that many thousands of boxes can be made and put out without being touched byhand and without individual insertion of the material in the machine.

It is an object to provide in such machine serrate edges to rovide serrated slots and to score the box or folding, all atone continuous operation.

It is a further object to provide means for stripping the box and the scraps from the box-forming rolls, to separate the completed box from the strip of stock and to chop the waste stock into small pieces for ready removal from the machine.

It is a further object to provide a machine which can be adjusted for various types of boxes without interfering with the set-up of the machine.

It is an additional object to provide a machine which is adjustable to different type of boxes and different forms thereof.

Referring to the drawings:

Figure 1 is a side elevation of the complete machine;

Figure 2 is a top plan view of the machine;

Figure 3 is a section on the line 33 of Figure 2, showing diagrammatically the progress of the stock strip through the machine;

Figure 4 is a detailed side elevation, partially in section showing the details of the gearing and adjusting mechanism for the several rolls and feeders in the machine;

Figure 5 is a front elevation partially in sectionof one corner of the machine showing the same mechanism as in Figure 4, looking at Figure 4 from the right hand side;

Figure 6 is a detailed side elevation of the upper and lower rolls showing one end thereof as both ends are identical;

Figure 7 shows one form of the box at one end thereof as produced by this machine;

Figure 8 shows one end of a box as produced by the particular serrating knives and cutters shown in" Figure 6 Figure 9 isa section on the line 99 of Figure 2 through the upper roll showing the right hand side thereof carrying the gears Flgure 10 is a similar view showing the lower right hand side'thereof;

Figure 11 is a section through the rolls on the line l1-11 of Figure 2;

Figure 12 is a section on the line 12 -12 of F1gure 2 showing the box stripper;

Figure 13 isa plan view of the box strip- P Figure 14 is a section through the rolls on the line 1414 of Figure 2 showing the scrap stripper;

Figure 15 is a top plan view of the top of the scrap stripper;

Figure 16 is a perspective of the serrating knives;

Figure 17 is a detail plan view of the box die for the corner lock;

Figure 18 is a side elevation thereof; Figure 19 is a top plan view of the corner cutter;

Figure 20 is a side elevation thereof;

Figure 21 is a section on the line 21-21 of Figure 6;

Figure 22 is a section on the line 2222 of Figure 2;

Figure 23 is a section on the line 99 of Figure 2 through the upper roll, showing the left-hand end thereof; Figure 24: is a similar view showing the left lower r011. v 7 Referring to the drawings in detail, it will be understood that in the operation of the machine the material out of which the boxes are made is a relatively pliable stock and is supplied on a large roll designated 1 from which is taken off a strip of material 2 that is fed between the guide rollers 3 mounted on the frame 4. The strip passes over the tension roller 5 and the tension strip 6 mounted on the bracket 7 and thence passes over. the guide roller 8 carried in the bracket 9 between a pair of guiding tension rollers 10. It thence passes beneath the punch or cutting roller 11 and over the die roller 12 to a point between the feedrollers 13 and 14. Hence it passes between the guide plates and 16 and is engaged by the rubber surface rollers 17 and 18 which are turning at a higher speed than the previous rollers thereby serving to boxes from a continuously moving strip of stock. This makes it possible to meet competitive conditions in the box industry and it completely eliminates all labor except a single unskilled supervisory operator who may attend a group of machines embodying my invention.

Bow forming rolls The box forming rolls 11 and 12 are respectively formed with serrating, cutting or scoring means projecting from the upper roll and adapted to extend in the corresponding depressions in the lower roll.

Referring to Figures 9 and 10 in particular, it will be observed that the upper roll is so constructed that it may be of any desired width with any combination of cutting, scoring or serrating members all of which can be locked in position without disturbing the rest of the machine thus making my machine adaptable to a wide variety of box constructions.

It will be observed that an upper stationary axle 25 is connected to a lower stationary axle 26. This connection by means of a bolt 27 is carried by the blocks 28 and 29 on the respective axles, which are spaced by the spacer sleeves 30 on the bolt 27. Lubricant is diverted from the lubricant cup 31 through the lubricant passageway 32 and passageway 33 to the surface of the bearing sleeve 34 which supports on the axle the roll 11 and its associate mechanism. A similar cup and grooves are provided in combination with a lower axle.

Mounted upon the bearing sleeves at either end of the axles 25 and 26 is the main roll sleeve, the ends of whichengage the shoulders 35 of the bearing sleeves. One of these bearing sleeves engages at one end on each axle a permanent shoulder 36 and 37 respectively. The ends of the bearing sleeves respectively engage detachable collars 37 a and 38 which are keyed by the keys 39 and 40 to the stationary axle. Suitable locking collars are threaded upon the two axles as at 41, 42, 43 and 44 in order to hold these col lars in position.

Mounted upon the roll sleeves 11 and 12 are a series of separable sleeves and a series of scoring, serrating or cutting knives that are spaced laterally in, order to provide the desired construction of boxes from the strip that is passing between the rolls.

The roll sleeve 11 has on either side of the center thereof sleeve portions 45. On one side of this sleeve portion 45 is a shoulder 46 having a groove 47 in which the box stripper finger operates. (See Figures 12 and 13.) A scoring ring 48 is mounted on the drum, then a ring 49 with a stripping groove 50 thereafter and a serrating ring 51 having teeth 52. (See Figure 16.) Additional rings may be provided as at 53 including a locking ring 54 which is threaded upon the drum 11.

Mounted upon a shoulder of the drum 11 is a shoulder ring 55 having a shoulder 56.

Associated with the ring 53 is a scrap stripping surface 57. On the end of the roll is the gear 58 held in place by the retaining sleeve 59 and the bolts 60.

On the other end of the roll on the other side of the annular portion 45 similar members are located and identified by similar numerals.

Referring to the roll or drum 12, it is provided with a plurality of spacer sleeves 61 abutting the centralannular shoulder62. The sleeves 63 are provided with scoring grooves 64 and knife grooves 65. The lower gear 66 is held in position by a-gear 67 and bolt 68.

The other end of the roll is provided with the threaded locking ring 69 for similar purposes. A spacer roll 70 is provided with a locking ring 71 retained by the bolt 72.

The arrangement of the serrating knives, stripper grooves, etc.. for producing a box, such as is shown in Figure 8 is well shown in Figure 6. The serrated knife 73 cuts the box off along the edge 20. thus dividing the box from the blank after it has been formed. The angular serrated knife 74 makes the serrated slits for locking purposes designated 75. The straight score is made by the knife 76 as at 77. The sides 78 of the box are formed by the annular knife 51 having teeth 52. The scores for the box are made by the scoring rings such as 48 and the transverse scores are made by the transverse score blades 48a.

These transverse score blades and serrated knives are locked into position after having been dropped in the appropriate slots located transversely of the converging sleeves or rings mounted upon the drum that is supported on the axle. They are locked into position by the taper head screws 79 as indicated in large detail in Figure 21 and also as shown in Figure 11.

In order to assist in stripping the stock from the rolls, spring-pressed plungers 80 are mounted in the face of the rolls and are actu- Referring to Figures 17 and 18, it will be noticed that the angular scoring and cutting for the corner lock is effected by the female members 83 having the V-shaped slots 84. These members are carried by the typical ring 85 which can be mounted on the drum 12 and receive in these slots the knives 74 and 76.

Fi ures 19 and 20 show the male knife member 86 that cuts the angular edge 78a connected on ring 86a.

Stripper mechanism Referring to Figures 12 and 13, it will be noted that the strip of stock 2 ue to the high speed of the rolls has a tendency to followaround the rolls. Stripper fingers 87 which are inserted in the grooves heretofore mentioned serve to lift the stock off of the'rolls.

\ These stripper fingers are provided with horizontal supporting plates 88 attached thereto by the screws 89. These plates are carried on bolt supported by the frame 91. In order to strip the sheet of refuse stock that remains after forming the box, stripper fingers 92 are provided having a tapered face 93 terminating in a sharp edge 94. These fingers are likewise supported by the bolts 90 on the bar 91.

Rejector roll mechanism and adjustment therefor In order to provide the proper elevation for the rejector roll mechanism so that it shall be in alignment with the space between the rolls as the rolls are changed from time to time for varying types of boxes there is provided on the machine bed 92a a vertically disposed frame 93a on either side of the machine. This frame supports a second frame 94a which is slidably mounted thereon on the guideway 95. A hand wheel 96 operates a shaft 97 which carries a gear meshing with the gear 98 which is mounted upon the screw bolt 99 so that as the gear 98 is operated it will serve to elevate the frame 94a in which it is mounted. This results in elevating the frame 94a and its associated mechanism such as the rolls 13 and 14. The rolls 13 and 14 are carried on an upward projection 100 on the frame 94a. This pro'ection also supports on the brackets 101 the ar 101a which carries the guide plates 16. The rolls 13 and 14 are provided with gears 102 and 103 which intermesh. The gear 103 isdriven by the gear 104 which in turn meshes with the gear 66 on the roll 12 carried by the axle 26. This axle also carries the gear 67 which in turn is operated by the gear 106. Gear 106 meshes with gear 107 and ear 108. Gear 108 is mounted on the shat 109 having a beveled pinion 110 meshing with the beveled-pinion 111 that drives the shaft 112. This shaft is carried in the bracket 113 that is mounted on the bed 92a. v In order to accommodate the vertical adjustfnents of theframe 94a the shaft 112 1s rovided with a bearing 113a that formsa aw to carry the gear 114, which is splined 1n the keywav 115 on the shaft 112. This gear is operated by a gear 116a within the housing 116 of the transverse shaft 117. This shaft likewise carries a key-way 118 to accommodate horizontal movement of the sliding earriage 119 to which it is attached by the bearing'120. Thus the shaft 117 is adapted to move vertically without demeshing the connecting gears.

The shaft 117 carries a bevel pinion 121 that meshes with the bevel pinion 122 on the shaft 123 of the ejector roll 18. The frame 119 also carries the shaft 124 of the ejector roll 17. By moving the frame 119 fore-andaft of the machine, different lengths of boxes can be accommodated. The hand wheel 125 is for this purpose." It operates the shaft 126. the bevel pinion 127, the bevel pinion 128 and the shaft 129 which is threaded within the block 130 on the end of the frame94a.

The shaft of the ejector 21,0f which there are a pluralitv across the machine,'is desig nated 131. This shaft) is provided with a gear 132 that is supported in the yoke 133 in a pair of sleeve arms 134 through which passes the shaft 117a. Between these arms and carried on the shaft 117a is the gear 135 driving the gear 132 on the shaft 131. The shafts 117a and 117 are connected by a universal'joint 136. The shaft 131 is swung on the arms 137 upon the shaft 124. It is raised and lowered about the shaft 124 by the links 138 having eyes 139 supporting the shaft 131. These links are threaded at 140 and, therefore, travel with n the bearing 141 which embraces the gear 142 that is driven by a gear 143, mounted on the hand wheel shaft 144. 145 is a sleeve bearing on shaft 144. This shaft is ope ated by thehand wheel 146.

The endless belt 23 is suitably driven by gear 146a, worm 147, shaft 148, bevel pinion 149 and power pinion 150 conrected to the remainder of the machine. 151 is a flywheel of the machine.

Waste cutters The shaft 152 which supports the roll 13 carries drums 153 with a plurality of transverse serr'ating knives 154-which successive- 1y, intermittently engage the surface of the tions as may be clearly embraced, within the scope of my claims and'invention.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a box-forming machine, means for supplying continuous strip of box stock, means for forming between rolls through which said stock passes box blanks and partially converting them from the strip of stock, tensioning means on either side of said rolls, the blank-forming means acting to maintain the stock at a predetermined tension, means for pulling the box sections at a faster rate than the movement of the strip of stock to complete the detachment of such sections and stripper means for stripping said stock and box blanks from said rolls.

2. In a box-forming machine, means for supplying a continuous strip of box stock, means for forming between rolls through which said stock passes box blanks and partially converting them from the strip of stock, tensioning means on either side of said rolls, the blank-forming means acting to maintain the stock at a predetermined tension, means for pulling the blank sections at a faster rate than the movement of the strip of stock to complete the detachment of such 'ections and stripper means for stripping said stock and box blanks from said rolls, said stripper means comprising box blanks stripper means and waste stock stripper means.

3. In a box-forming machine, means for supplying a continuous strip of box stock, means for forming between rolls through which said stock passes box blanks and partially converting them from the strip of stock, tensloning means on either side of said rolls, the box-forming means acting to maintain the stock at a predetermined tension, means for pulling the box sections at a faster rate than the movement of the strip of stock to complete the detachment of such sections, stripper means for stripping said stock and box blanks from said rolls, said stripper means comprising box blank stripper means and waste stock stripper means and means for converting said waste stock into lengths as it is ejected from the machine.

In combination, in a box-making machine, means to supply a continuous strip of stock, resistance means for resisting the movement of said strip, means to pull said strip against said resistance, punch and die means for forming box blanks from said strip and partially converting them, means for actuating said forming means to also feed said strip and blanks, and means driven simultaneously therewith at a higher rate of speed for engagement of the box blanks only to pull them from the main strip of stock.

5. In combination, in a box-making machine, means to supply a continuous strip of stock, resistance means for resisting the movement of said strip, means to pull said stock against said resistance, punch and die means for forming box blanks from said strip and partiallyconverting them, means for actuating said forming means to also feed said strip and blanks, means driven simultaneously therewith at a higher rate of speed for engagement of the box blanks only to pull them from the main strip of stock and means simultaneously driven with said pulling means for removing the surplus stock after the formation of the box blanks.

6. In combination, a box-makin machine, means for forming box blanks and partially converting them from a strip of stock, means to pull said strip of stock and blanks between said blank-forming means, additional pulling means traveling at a greater rate of speed for detaching said box blank from the strip of stock and adjusting means for adjusting the elevation of said pulling means.

7. In combination, a box-making machine, means for forming box blanks and partially converting them from a strip of stock, means to pull said strip of stock and blanks between said blank-forming means, additional pulling means traveling at a greater rate of speed for detaching said box blank from the strip of stock, adjusting means for adjusting the elevation of said pulling means and for adjusting the elevation of said higher speed converting means.

8. In combination, a box-making machine, means for forming box blanks and partially converting them from a strip of stock, means to pull said strip of stock and blank between said blank forming means, additional pulling means traveling at a greater rate of speed for detaching said box blank from the strip of stock, adjusting means for adjusting the elevation of said pulling means and for adj usting the elevation of said higher speed converting means, and means for adjusting the longitudinal position between said means to accommodate different lengths of box blanks.

9. In a box-making machine, superimposed pulling rolls for a continuous strip of stock, a frame therefor, means to adjust said frame vertically, a second pulling means driven'at a higher rate of speed than the first-mentioned pulling means comprising rolls adapted to detach formed blanks partially converted from the strip of stock and means to change the longitudinal distance between said pulling means to accommodate different lengths of box blanks.

10. In a box-making machine, superimposed pulling rolls for a continuous strip of stock, a frame therefor, means to adjust said frame vertically, a second pulling means driven at a higher rate of speed than the firstmen tioned pulling means comprising rolls adapted to detach formed blanks partially converted from the strip of stock, means to change the longitudinal distance between 

